Contact lens sterilizer unit casing



FIG. 1 is a perspective view of a contact lens sterilizer unit casing showing my new design;

FIG. 2 is a side elevational thereof;

FIG. 3 is a rear elevation thereof; and

FIG. 4 is a front elevation thereof. 

The ornamental design for a contact lens sterilizer unit casing, substantially as shown and described. 